Hair-sprsng plier



(No Model) T. REEVE, Jr.

HAIR SPRING PLIERS.

No. 356,729. Patented Jan. 25, 1887.

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NY PETERS mummhc m hur, wahmgmlrc' UNITED Srnrns Parent Oriana THOMASREEVE, JR, OF GLASSBOROUGH, NEW JERSEY, ASSIGNOR OF ONE- HALF TO CHARLESSGHEER, OF PHILADELPHIA, PENNSYLVANIA.

HAIR-SPRING PL! ER.

SPECIFICATION forming part of Letters Patent No. 356,729, dated January25, 1887.

Application filed May 8, 1886. Serial No. 201.545. (No model.)

1' all whom it may concern.-

Be it known that I, THOMAS Reeve, J12, a citizen of the United States,residing at Glassborough, in the county of Gloucester and 5 State of NewJersey, have invented certain new and useful Improvements inHair-Spring- Oollet Removers; and I do hereby declare the following tobe afull, clear, and exact description of the invention, such as willenable If) others skilled in the art to which it appertains to make anduse the same.

This invention relates to tools iised by watch-makers (or removing thehair-spring collet with its attached spring from the staff of thebalance-wheel of a watch when it is de-' sired to remove the spring forany purpose.

The object of the invent-ion is to produce an implement by the aid ofwhich the hail? spring collet and the attached spring may be removedquickly from the staff of a balancewheel, and without in any waydisarranging, bending, or distorting the spring, and with out requiringthat the balancewheel and spring be removed from the watch-case beforeseparating them.

Vith this object in view the invention resides in an instrument made inthe general form of a pair ofpinchers, and having its pivoted armsprovided at their operative ends with depending portions so formed as topass around the hairspring when in position, and to wedge themselvesbetween the collet and the staff of the balance-wheel in such way aseffectually to remove the collet and spring.

The invention resides particularly in an instrument made in the generalform of a pair of pinchers, provided at their operative ends withdepending portions bent outward and then inward at inclines, and havingtheir ends 40 so beveled as to wedge themselves, when proper pressureis'applied, between the collet and the top of the balancewheel, in orderto raise the collet from its seat, the bend of the ends being such as toreceive the spring between them and prevent injury to the spring bybending or distorting.

I have illustrated the invention in the ac companying drawings, inwhich- Figure l is a perspective view of a hairspringcollet remover madein accordance with my invention. Fig. 2 is an end view of the same, andFig. 3 is a plan view showing the instrument in position for operation.

In the drawings, A and A represent pivoted arms, provided with suitablehandles, a and a, of such form as to be grasped conveniently by anoperator, and pivoted together at b. The operative ends B and B areprovided with depending portions b and it. These ends are first bentoutward from the portions B and B, and thence inward, forming a space ofsuch form between the two as to provide a receptacle for the hair-springwhen the instrument is in use. The lower ends, If and b, of the ends I)and b are quite sharp, and are beveled in such way as to present lowerplain surfaces,which slide along the upper portion of the balance-wheelin such manner as to allow the sharp edges to enter the collet and thewheel and exert a wedging action to unseat the collet, and consequentlyto remove it and the spring attached thereto from the balancewheel.

In using the tool the operative ends are moved apart as far as requiredto pass over 7 the spring, and the ends b and I) allowed to rest uponthe spoke of the balance wheel. The handle portions A and A are thenslowly drawn together, sliding the sharp edges b and 21 along the spoke.As the sharp edges come in contact with the collet, and sufficient forceis applied, they wedge themselves between the collet and thebalance-wheel, and thus separate the collet from the wheel, and thespring and collet may then easily be lifted off.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

1. An instrument for removing hairspring collets, made approximately inthe form of pinchers, provided with depending operative ends which arebent first outward and then inward, forming a receptacle for the springwhile being removed, substantially as described.

2. A hair-springcollet remover, made approximately in the form of apairof pinchers, provided with depending operative ends which are bent firstoutward and then inward. and provided with beveled edges, substantiallyas 100 and for the purpose set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

THOS. REEVE, JR.

iVitnesses:

DAVID E. MEAD, WM. H. GIVEN.

